JPH0729587Y2 - Multi-pole connector - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a multi-pole connector for connecting highly sensitive equipment such as computer peripheral equipment, aerospace equipment, communication equipment, and various control equipment, and particularly to a cable. And a noise filter element that blocks noise that tries to pass through the connector, blocks interfering radio waves that enter the equipment from the outside, and prevents noise that is generated from inside the equipment from radiating outside the equipment through cables and connectors. The present invention relates to a multi-pole connector that enables efficient arrangement and connection of components.

[Background technology]

Conventionally, as a general connector used for connection between a personal computer and a device such as a printer, the fitting portion of the connector is D
Some of them are called D sub-connectors because of their shape. This D sub-connector has a plurality of connector terminals implanted in an insulator, and the outer periphery of the connector terminal that covers the outer periphery of the insulator and projects from the insulator is surrounded by a D-shaped metal body, and is attached to the rear end of the connector terminal. One that has a connector body that is formed by integrally molding plastic resin from the rear end of the connector to the cable end, or a pair of plastic resin that is molded in advance from the rear end of the connector to the cable end. The insulation case of is fastened with bolts and nuts,
There is something called an assembly type. Further, the connector body and the insulating case of the above-mentioned connector are provided with a shield for preventing intrusion of noise signals from the outside and radiation of noise signals from the inside from the rear end of the connector to the cable end, Some have taken measures against noise.

However, in recent years, in devices and the like to which the above-mentioned multi-pole connector is connected, the voltage and current for signal transmission used have become minute, and the pattern of the printed circuit board mounted in the device has become complicated and precise. In addition, the influence of noise signals is increasing due to the complexity and refinement of circuit elements and LSI circuit patterns mounted on printed circuit boards. Therefore, the above-mentioned multi-pole connector with a shield cannot sufficiently block noise signals. I have a problem to say. In addition, a noise filter element that blocks noise signals is applied, and a plate-shaped capacitor and an axial core with a coil wound around a ferromagnetic material are connected to the rear end of each terminal of multiple connector terminals, and the outer circumference is shielded. Multi-pole connector covered with (Japanese Patent Publication Sho 63-43872
issue). A multi-pole connector (No. Shokai 63-89680) in which a tubular ferrite core is inserted into one end of the cable connected to the connector, and the connector body is integrally molded. There is an assembly-type multi-pole connector (No. Shokai 63-9779) in which a tubular ferrite core is inserted at one end of the cable connected to the connector and the connector body is tightened with bolts and nuts. However, although the multipole connector to which these noise filter elements are applied has been considerably improved as compared with the multipole connector having only a shield as a noise countermeasure, the multipole connector of, for example, is fixed to equipment. And the cable is not connected, disconnection,
No specific proposal has been made regarding the connection between the cable and the noise blocking element that cause problems such as short circuit,
Further, no attention is paid to the miniaturization of the connector size. In addition, the multipole connector of and has taken noise countermeasures by inserting a cylindrical ferrite core as a noise filter element into one end of the cable connected to the connector, but this method limits the attenuation of noise signals. However, there is a problem that the blocking effect is not sufficient.
Therefore, the cable is directly connected to the connector, and
A multipole connector using a toroidal core in which a plurality of windings are wound around an annular core has been proposed as a noise filter element having a high noise signal blocking efficiency.

[Problems to be solved by the device]

However, according to the conventional multipole connector using the toroidal core as the noise filter element, the connection between the connector terminal and the lead wire of the winding wire and the connection between the lead wire of the winding wire and the cable core is made. If there are many locations and the spacing between connector terminals is narrow (specifically, 2.5 to 2.7 mm) and they are arranged in multiple rows, the connection work becomes complicated, and there is a risk of incorrect connection or the connection part There was a risk of short circuit. In addition, there is a problem that a connection having a sufficient strength cannot always be obtained because the connection work is difficult. further,
In order to arrange and connect the toroidal core and to avoid a short circuit or the like, it is necessary to increase the thickness, width, and depth of the connector body, which causes a problem such as an increase in size. Due to these various problems, it has not been commercialized in reality.

Therefore, it is an object of the present invention to provide a multi-pole connector that allows easy and reliable connection work of a connecting portion.

Another object of the present invention is to provide a multipolar connector having sufficient strength and connection strength without fear of erroneous connection, short circuit, etc., and without damage to the connection portion, toroidal core and its winding. It is to be.

Another object of the present invention is to provide a multi-pole connector of a practical size that incorporates a toroidal core as a noise filter element and does not increase in size.

[Means for Solving the Problems]

A printed circuit board provided with an arrangement hole for accommodating a magnetic material annular core forming a choke coil at approximately the center has one end located between the upper and lower terminal rows and connected to the multi-pole terminal. By providing a pair of dividing frames provided with a cylindrical protrusion inserted into the inner hole of the magnetic annular core on the inner surface of the printed circuit board, the connector body, and the multi-core cable without changing the relative position The present invention provides a multipolar connector adapted to be positioned in a line.

That is, the multipolar connector of the present invention makes it possible to easily and surely perform the connecting work of the connecting portion by connecting each portion through the printed circuit board provided with the predetermined connecting circuit pattern. The connection and the short circuit are prevented from occurring, and by fixing each connection portion on the printed circuit board, the connection is ensured and the connection strength is increased. In addition, a hole is provided in the printed board, a noise filter element (toroidal core) is arranged in the hole, and
The printed circuit board is inserted and mounted between rows in which a plurality of connector terminals are arranged in two rows, whereby the size of the connector body is reduced. Furthermore, the protrusion provided inside the dividing frame that covers the printed circuit board is inserted into the hole of the annular core, and the vertical and horizontal movement of the noise filter element is regulated and fixed. As a measure against erroneous connection, the number of windings of the noise filter element may be adapted to the number of cable terminals to be connected to the connector terminals, and the colors of the windings may be changed for identification.

〔Example〕

The multi-pole connector of the present invention will be described in detail with reference to FIGS. 1 and 2. FIG. 1 is a partially cutaway plan view showing an embodiment of the present invention, in which a plurality of connector terminals are planted in an insulator in a plurality of rows, the connector terminals covering the outer periphery of the insulator and protruding from the insulator. A connector tip 1 having an outer periphery surrounded by a metal body, and a supporter that holds a cable 2 at one end thereof and relieves tension and bending applied to the cable 2.
A connector body 3 formed by integrally molding a plastic resin having 3a; an insulating case 4 provided inside the connector body 3 for accommodating a noise filter element and a printed circuit board described later; and a connector body 3 and an insulating case 4. It is composed of a shield 5 provided therebetween. In addition, reference numeral 1a designates a detachment preventing projection for preventing the detachment of the connector tip portion 1 when the connector tip portion 1 is inserted and fitted into a connector fixed to the device side.

Next, based on FIG. 2, the connector tip portion 1, the cable 2,
The insulating case 4, and the noise filter element 6 and the printed circuit board 7 arranged inside the insulating case 4 will be described in detail. The connector tip portion 1 covers the outer circumference of an insulator 102 in which a plurality of connector terminals 101 are planted in a plurality of rows, and the insulator 1
It is formed by surrounding the outer periphery of the connector terminal 101 protruding from 02 with a metal body 103, and the metal body 103 has a flat plate portion 105 having a hole 104 for fixing the drop-out preventing projection 1a (not shown).
The rear end 101a of the connector terminal projects from the insulator 102 by a predetermined dimension, and the metal body 103 is not surrounded by a predetermined portion as shown in the figure. As shown in the figure, the cable 2 is formed by twisting a pair of insulated wire cores 201 together with a drain wire to form a twisted wire core, and a plurality of wire cores provided with a shield (not shown) of polyaluminum tape on the outer periphery thereof. It is twisted together, and further has a poly-aluminum tape winding (not shown), a braided shielding layer 202, and an outer cover 203 on the outer periphery thereof. Cable 2
As the above, other configurations in which a plurality of wire cores are twisted together to provide a shield jacket are applicable, but the above-mentioned cable is a transceiver cable for LAN. The noise filter element 6 is composed of a so-called toroidal core in which a plurality of windings 602 are wound around an annular ferromagnetic core 601 according to the number of connector terminals 101 or the number of cable cores 201. The winding 602 has a different color to facilitate connection work and avoid misconnection. The noise filter element 6 has the inner hole 603 because it uses the above-mentioned annular ferromagnetic core 601. The printed circuit board 7 has a predetermined connection circuit 701 for connecting the rear end 101a of the connector terminal, the lead wire of the noise filter element 6, and the conductor of the cable core 201 on the upper and lower surfaces (both surfaces) thereof. Further, an arrangement hole 702 for arranging the noise filter element 6 is provided in the central portion thereof. Reference numeral 703 denotes a concave portion that engages with an engaging leg 405 of the dividing frame 401 (a part of the insulating case 4) described later, and four concave portions are formed. The insulating case 4 is composed of a pair of division frames 401 and 402, and the division frame 401 is composed of a plane plate 403 and a wall 404, and a wall 404.
Is provided with four engaging legs 405 having locking protrusions (not shown) and a cable holding groove (not shown) at the tip thereof. The other dividing frame 402 includes a plane plate 403a and a wall 404.
The wall 404a is provided with a cable holding groove 406 and an engaging recess 407 with which the above-mentioned engaging leg 405 engages, and the engaging recess 407 engages with the engaging protrusion described above. It has a step 408. Further, the flat plates 403, 403a are provided with cylindrical protrusions 409 which are inserted into the inner holes 603 of the noise filter element 6 and fix the noise filter element 6 at the substantially center of the arrangement hole 702 of the printed board 7.

FIG. 3 shows the rear end 101a of the connector terminal 101 on the printed circuit board 7
The connection state in which the connection circuit 701 is connected by the soldering connection portion 705 is shown, and the end portion of the printed circuit board 7 is sandwiched between the rear ends 101a of the two rows of connector terminals 101. Incidentally, 704 is a substrate insulating film.

In the above configuration, the printed circuit board 7 is inserted between the rows of the rear ends 101a of the connector terminals 101 of the connector tip portion 1 to align the connector terminals 101 with the connection circuit 701 and connect with the rear ends 101a of the connector terminals 101. Circuit 701 is connected by soldering. As a result, the printed circuit board 7 is fixed at the connector tip portion 1 at a substantially central portion in the thickness direction of the connector. continue,
The noise filter element 6 is inserted into the arrangement hole 702 of the printed board 7, the lead wire is inserted into a predetermined connection hole on the printed board 7, and soldering is performed. By this soldering, the noise filter element 6 is hung on the printed circuit board 7, and the printed circuit board 7 is located at a substantially central portion in the thickness direction of the noise filter element 6. Next, the conductor of the cable core 201 is inserted into a predetermined connection hole of the printed board 7 and soldered.
The above connections are made on both sides of the printed circuit board 7. After the connection is completed, the wall-less portions of the divided frames 401 and 402 are positioned at the connector tip portion 1, the respective cylindrical protrusions 409 are inserted into the inner holes 603 of the noise filter element 6, and the respective cable holding grooves 406 are formed. In accordance with the position of the cable 2, the engaging leg 405 is further inserted into the engaging recess 407 via the recess 703 of the printed circuit board 7 so that the locking projection is locked.
Assemble the insulating case 4 by locking it to 408. As a result, the rear end of the connector front end portion 1 is
The end of the cable 2, the printed circuit board 7, the noise filter element 6 are clamped and fixed. By this fixing, the noise filter element 6 is positioned at a substantially central portion of the arrangement hole 702 of the printed board 7 with a predetermined gap. After fixing, a metal tape is attached to the outer circumference of the insulating case 4 to form the shield 5, and the braided shield layer 202 of the cable 2 is connected to the shield 5. Here, the shield 5 may be formed by plating a conductive material or the like. After that, a plastic resin is integrally molded from one end of the connector tip portion 1 to the cable end to provide a connector body 3 having a supporter 3a.

The multi-pole connector of this embodiment has a rear end 1 of the connector terminal 101.
The printed circuit board 7 is inserted between the rows of 01a, and the rear end 101a of the terminal and the connection circuit 701 of the printed circuit board 7 are connected to each other by arranging the printed circuit board 7 at a substantially central portion in the thickness direction of the connector. This facilitates the elimination of short circuits, insulation defects, etc. due to the connection between the terminals, and the printed circuit board 7 is fixed to the connector terminals 101 by soldering, so that the fixing force is increased.
It is possible to avoid increasing the size of the connector in the thickness direction. Insert the printed circuit board 7 between the rear ends 101a of the connector terminals 101,
The printed circuit board 7 is fixed by soldering the connection circuit 701 between the rear end 101a of the terminal and the printed circuit board 7, and the nozzle filter element 6 is provided in the thickness direction of the printed circuit board 7 by forming a hole in the printed circuit board 7. Since it was arranged in the central part,
The overall thickness of the multi-pole connector can be reduced, and an increase in size can be avoided. Arrangement hole 702 of printed circuit board 7
The noise filter element 6 arranged in the
The cylindrical protrusions 409 of the dividing frames 401 and 402 are inserted into the frame 3, and the dividing frames 401 and 402 are engaged with the printed circuit board 7, so that the noise filter element 6 is arranged at a substantially central portion in the arrangement hole 702 and a predetermined gap is formed. Since the noise filter element 6 does not move vertically and horizontally, the winding of the noise filter element 6 and the lead wire are prevented from being broken, and the annular core is prevented from being broken. The printed circuit board 7 is connected at approximately the center in the thickness direction of the connector, and the noise filter element 6 is mounted in the arrangement hole 702 of the printed circuit board 7 so as to divide the noise filter element 6 into approximately two parts.
Insert the cylindrical protrusion 409 of the case into 3 and arrange it in the approximate center of the arrangement hole 702, and in the case, connect the connector, printed circuit board,
Since the noise filter element, cable, etc. are held and fixed at the approximate center in the thickness direction of the connector, each component does not move during use of the connector, and each connection part, core of the noise filter element, winding , The lead wire is not damaged.

[Effect of device]

As described above, in the multi-pole connector of the present invention, the printed circuit board having the arrangement hole for accommodating the magnetic annular core forming the choke coil at the substantially center has one end between the upper and lower terminal rows. Positioned and connected to the multipolar terminal, by providing a pair of dividing frames provided on each inner surface with a cylindrical protrusion inserted into the inner hole of the magnetic annular core,
Since the printed circuit board, the connector body, and the multi-core cable are positioned linearly without changing their positions relative to each other, the connecting work of the connecting portion can be performed easily and surely, and erroneous connection, It was possible to avoid a short circuit and the like, to prevent damage to the core of the noise filter element and the winding, and to realize sufficient strength of the connecting portion.
In addition, the overall thickness can be reduced to achieve miniaturization. Furthermore, as a secondary effect, manufacturing becomes easier,
And the reliability of the product is improved.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view showing an embodiment of the multipolar connector of the present invention. FIG. 2 is an exploded perspective view of the multipolar connector of the present invention. FIG. 3 is a view showing a connection state between the rear end of the connector terminal and the connection circuit of the printed board. Explanation of symbols 1 …… Connector tip 1a …… Prevention protrusion 2 …… Cable 3 …… Connector body 3a …… Supporter 4 …… Insulation case 5 …… Shielding body 6 …… Noise filter element 7 …… Printed circuit board 101 ...... Connector terminal 101a ...... Rear end of connector terminal 102 ...... Insulator, 103 ...... Metal body 104 ...... Hole, 105 ...... Flat plate 201 ...... Insulation core, 202 ...... Braided shield layer 203 ...... Outside Enclosure 401,402 ... Dividing frame 403,403a ... Plane plate 404,404a ... Wall 405 ... Engaging leg 406 ... Cable holding groove 407 ... Engaging recess 408 ... Locking step 409 ... Cylindrical protrusion 601 ... … Ferromagnetic core 602 …… Winding, 603 …… Inner hole 701 …… Connection circuit, 702 …… Arrangement hole 703 …… Recess, 704 …… Substrate insulation film 705 …… Soldering connection part

Claims (1)

[Scope of utility model registration request] 1. The number of cores of the multi-core cable and the number of cores of the multi-core cable, the multi-core terminals arranged in two rows in the upper and lower rows of the connector body, and the number of cores of the multi-core cable. A large number of windings corresponding to the number of terminals of the pole terminals are connected to a large number of choke coils formed by winding the magnetic material annular core, and a pair of windings are connected from the end of the multi-core cable to the end of the connector body. In a multi-pole connector configured by applying a dividing frame, the printed circuit board has one end located between the upper and lower terminal rows and is connected to the multi-pole terminal, and the choke coil is provided substantially in the center thereof. An arrangement hole for accommodating the magnetic annular core to be formed is provided, and the pair of divided frames are provided with a cylindrical protrusion inserted into an inner hole of the magnetic annular core on each inner surface of the multi-core cable. The connector from the end By applying the pair of dividing frames to the end portion of the main body, the cylindrical protrusion is inserted into the inner hole of the magnetic body annular core to position the magnetic body annular core in the arrangement hole, and By sandwiching the connector main body and the multi-core cable at both ends of a pair of split frames, the printed circuit board, the connector main body, and the multi-core cable are positioned linearly without changing their relative positions. A multi-pole connector characterized by having.